Location: Plano, Texas (Onsite - 4 days/week)
Role: Senior Network Engineer
Experience Required: 10+ Years
We are seeking an experienced Senior Network Engineer with strong expertise in enterprise networking, data center infrastructure, and hybrid cloud connectivity. The ideal candidate will have hands-on experience with Cisco Nexus switching, enterprise firewalls (Fortinet FortiGate and Palo Alto), and Azure networking services such as ExpressRoute . This role will be responsible for designing, implementing, and supporting secure, scalable, and highly available network environments across on-premises data centers and Microsoft Azure cloud platforms.
Design, implement, and maintain enterprise data center network infrastructure , including switching, routing, and segmentation.
Configure and manage Cisco Nexus switches supporting Layer 2 and Layer 3 networking, including VLANs, vPC, STP, and high availability architectures .
Implement and troubleshoot routing protocols such as BGP and OSPF to ensure stable and optimized network traffic.
Manage and administer Fortinet FortiGate and Palo Alto firewalls , including:
Security policy configuration
NAT setup
VPN connectivity
Traffic inspection and monitoring
Ensure proper network segmentation, access controls, and infrastructure-level security .
Configure and maintain hybrid connectivity between on-premise data centers and Microsoft Azure .
Implement and support Azure Virtual Networks and Azure ExpressRoute connectivity.
Support secure and reliable communication between cloud workloads and enterprise data centers .
Diagnose and resolve complex network, firewall, and cloud connectivity issues affecting servers, applications, and database systems.
Perform traffic path analysis, routing validation, and firewall log analysis during production incidents.
Conduct root cause analysis for network outages or performance issues.
Monitor network performance and availability using network monitoring and observability tools .
Ensure high availability and minimal downtime for enterprise network services.
Collaborate with infrastructure, cloud, security, and system engineering teams to maintain stable enterprise IT operations.
Support critical infrastructure services including SQL database connectivity, backup routing, and application traffic flows .
10+ years of experience in enterprise networking and network engineering .
Strong hands-on experience with Cisco Nexus switching platforms .
Deep understanding of Layer 2 and Layer 3 networking concepts including VLANs, trunking, routing, and segmentation.
Experience with routing protocols such as BGP and OSPF .
Hands-on experience managing Fortinet FortiGate and Palo Alto firewalls .
Experience supporting Azure networking services including Virtual Networks and ExpressRoute .
Strong troubleshooting experience in hybrid environments (on-premise + Azure cloud) .
Experience supporting enterprise infrastructure networks and application connectivity .
Experience with data center high availability architectures and redundancy design .
Knowledge of network monitoring and observability tools .
Understanding of enterprise security best practices and network segmentation strategies .
Experience supporting critical enterprise systems including database and backup traffic routing .
Network Engineering
Cisco Nexus
BGP / OSPF
Fortinet FortiGate
Palo Alto Firewall
Azure ExpressRoute
Network Security
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